Abstract
The Na, K, Ca, Mg, Fe, Cu, Mn and Zn contents of hashish batches in judicial seizing were determined in order to confirm, once again, the reliability (expressed by precision and accuracy) of the "Carbonaceous Slurry" as pretreatment of complex organic matrices prior to analysis. The analysis of pressed cakes of five different batches also served to prove the homogeneity of the analytical data in a statistical sense both related to one cake (relative standard deviation) and to different cakes of one batch (t-test) as well as to determine the equality or the non- equality of the batches on the basis of the analytical data (variance analysis, Duncan-test).
